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Analysis

  • max time kernel
    20s
  • max time network
    90s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    14-05-2021 04:20

General

  • Target

    keygen-step-4d.exe

  • Size

    4.6MB

  • MD5

    563107b1df2a00f4ec868acd9e08a205

  • SHA1

    9cb9c91d66292f5317aa50d92e38834861e9c9b7

  • SHA256

    bf2bd257dde4921ce83c7c1303fafe7f9f81e53c2775d3c373ced482b22eb8a9

  • SHA512

    99a8d247fa435c4cd95be7bc64c7dd6e382371f3a3c160aac3995fd705e4fd3f6622c23784a4ae3457c87536347d15eda3f08aa616450778a99376df540d74d1

Malware Config

Signatures

  • Downloads MZ/PE file
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 10 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 12 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 4 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 6 IoCs
  • Modifies registry class 12 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 19 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Browser
    1⤵
      PID:2808
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s WpnService
      1⤵
        PID:2688
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
        1⤵
          PID:2676
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
          1⤵
            PID:2476
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2448
          • C:\Users\Admin\AppData\Local\Temp\keygen-step-4d.exe
            "C:\Users\Admin\AppData\Local\Temp\keygen-step-4d.exe"
            1⤵
            • Suspicious use of WriteProcessMemory
            PID:4008
            • C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe
              "C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe"
              2⤵
              • Executes dropped EXE
              • Drops file in Program Files directory
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:3884
              • C:\Windows\SysWOW64\rundll32.exe
                "C:\Windows\System32\rundll32.exe" "C:\Program Files\install.dll",install
                3⤵
                • Loads dropped DLL
                • Modifies registry class
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:3572
            • C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe
              "C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe"
              2⤵
              • Executes dropped EXE
              • Suspicious use of AdjustPrivilegeToken
              PID:3660
            • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe
              "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
              2⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:220
              • C:\Users\Admin\AppData\Local\Temp\is-CMUB9.tmp\Install.tmp
                "C:\Users\Admin\AppData\Local\Temp\is-CMUB9.tmp\Install.tmp" /SL5="$9007E,235791,152064,C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
                3⤵
                • Executes dropped EXE
                • Loads dropped DLL
                • Suspicious use of WriteProcessMemory
                PID:596
                • C:\Users\Admin\AppData\Local\Temp\is-793HV.tmp\Ultra.exe
                  "C:\Users\Admin\AppData\Local\Temp\is-793HV.tmp\Ultra.exe" /S /UID=burnerch1
                  4⤵
                  • Drops file in Drivers directory
                  • Executes dropped EXE
                  • Adds Run key to start application
                  • Drops file in Program Files directory
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of WriteProcessMemory
                  PID:3956
                  • C:\Program Files\Windows Photo Viewer\VOLOTPBLCP\ultramediaburner.exe
                    "C:\Program Files\Windows Photo Viewer\VOLOTPBLCP\ultramediaburner.exe" /VERYSILENT
                    5⤵
                    • Executes dropped EXE
                    • Suspicious use of WriteProcessMemory
                    PID:2744
                    • C:\Users\Admin\AppData\Local\Temp\is-86PB7.tmp\ultramediaburner.tmp
                      "C:\Users\Admin\AppData\Local\Temp\is-86PB7.tmp\ultramediaburner.tmp" /SL5="$501E4,281924,62464,C:\Program Files\Windows Photo Viewer\VOLOTPBLCP\ultramediaburner.exe" /VERYSILENT
                      6⤵
                      • Executes dropped EXE
                      • Drops file in Program Files directory
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of FindShellTrayWindow
                      • Suspicious use of WriteProcessMemory
                      PID:3776
                      • C:\Program Files (x86)\UltraMediaBurner\UltraMediaBurner.exe
                        "C:\Program Files (x86)\UltraMediaBurner\UltraMediaBurner.exe" -silent -desktopShortcut -programMenu
                        7⤵
                        • Executes dropped EXE
                        PID:2512
                  • C:\Users\Admin\AppData\Local\Temp\a6-2925a-803-b32b2-b5f5f196a6d0f\ZHashulushile.exe
                    "C:\Users\Admin\AppData\Local\Temp\a6-2925a-803-b32b2-b5f5f196a6d0f\ZHashulushile.exe"
                    5⤵
                    • Executes dropped EXE
                    PID:3720
                  • C:\Users\Admin\AppData\Local\Temp\95-07b2d-e32-368a8-81a221b1c583a\Taepururaga.exe
                    "C:\Users\Admin\AppData\Local\Temp\95-07b2d-e32-368a8-81a221b1c583a\Taepururaga.exe"
                    5⤵
                    • Executes dropped EXE
                    • Suspicious use of AdjustPrivilegeToken
                    PID:4112
                    • C:\Windows\System32\cmd.exe
                      "C:\Windows\System32\cmd.exe" /k C:\Users\Admin\AppData\Local\Temp\rwmjzi42.leu\001.exe & exit
                      6⤵
                        PID:4948
                        • C:\Users\Admin\AppData\Local\Temp\rwmjzi42.leu\001.exe
                          C:\Users\Admin\AppData\Local\Temp\rwmjzi42.leu\001.exe
                          7⤵
                            PID:5280
                        • C:\Windows\System32\cmd.exe
                          "C:\Windows\System32\cmd.exe" /k C:\Users\Admin\AppData\Local\Temp\0qdszozp.bci\ebook.exe & exit
                          6⤵
                            PID:5160
                            • C:\Users\Admin\AppData\Local\Temp\0qdszozp.bci\ebook.exe
                              C:\Users\Admin\AppData\Local\Temp\0qdszozp.bci\ebook.exe
                              7⤵
                                PID:5356
                                • C:\Windows\SysWOW64\rundll32.exe
                                  C:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\0qdszozp.bci\EBOOKE~1.DLL,Z C:\Users\Admin\AppData\Local\Temp\0qdszozp.bci\ebook.exe
                                  8⤵
                                    PID:5204
                                    • C:\Windows\SysWOW64\RUNDLL32.EXE
                                      C:\Windows\system32\RUNDLL32.EXE C:\Users\Admin\AppData\Local\Temp\0qdszozp.bci\EBOOKE~1.DLL,pkZgLDbBBaz4
                                      9⤵
                                        PID:5520
                                • C:\Windows\System32\cmd.exe
                                  "C:\Windows\System32\cmd.exe" /k C:\Users\Admin\AppData\Local\Temp\4f1xnjoy.o1w\installer.exe /qn CAMPAIGN="654" & exit
                                  6⤵
                                    PID:5560
                                    • C:\Users\Admin\AppData\Local\Temp\4f1xnjoy.o1w\installer.exe
                                      C:\Users\Admin\AppData\Local\Temp\4f1xnjoy.o1w\installer.exe /qn CAMPAIGN="654"
                                      7⤵
                                        PID:5696
                                        • C:\Windows\SysWOW64\msiexec.exe
                                          "C:\Windows\system32\msiexec.exe" /i "C:\Users\Admin\AppData\Roaming\AW Manager\Windows Manager 1.0.0\install\97FDF62\Windows Manager - Postback Y.msi" /qn CAMPAIGN=654 AI_SETUPEXEPATH=C:\Users\Admin\AppData\Local\Temp\4f1xnjoy.o1w\installer.exe SETUPEXEDIR=C:\Users\Admin\AppData\Local\Temp\4f1xnjoy.o1w\ EXE_CMD_LINE="/exenoupdates /forcecleanup /wintime 1620706617 /qn CAMPAIGN=""654"" " CAMPAIGN="654"
                                          8⤵
                                            PID:5188
                                      • C:\Windows\System32\cmd.exe
                                        "C:\Windows\System32\cmd.exe" /k C:\Users\Admin\AppData\Local\Temp\yrstbi0b.qji\hbggg.exe & exit
                                        6⤵
                                          PID:5972
                                          • C:\Users\Admin\AppData\Local\Temp\yrstbi0b.qji\hbggg.exe
                                            C:\Users\Admin\AppData\Local\Temp\yrstbi0b.qji\hbggg.exe
                                            7⤵
                                              PID:6016
                                          • C:\Windows\System32\cmd.exe
                                            "C:\Windows\System32\cmd.exe" /k C:\Users\Admin\AppData\Local\Temp\2yexqi3u.vj4\google-game.exe & exit
                                            6⤵
                                              PID:4732
                                              • C:\Users\Admin\AppData\Local\Temp\2yexqi3u.vj4\google-game.exe
                                                C:\Users\Admin\AppData\Local\Temp\2yexqi3u.vj4\google-game.exe
                                                7⤵
                                                  PID:4824
                                                  • C:\Windows\SysWOW64\rUNdlL32.eXe
                                                    "C:\Windows\system32\rUNdlL32.eXe" "C:\Users\Admin\AppData\Local\Temp\install.dll",install
                                                    8⤵
                                                      PID:5056
                                        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\filee.exe
                                          "C:\Users\Admin\AppData\Local\Temp\RarSFX0\filee.exe"
                                          2⤵
                                            PID:5400
                                        • \??\c:\windows\system32\svchost.exe
                                          c:\windows\system32\svchost.exe -k netsvcs -s BITS
                                          1⤵
                                          • Suspicious use of SetThreadContext
                                          • Modifies data under HKEY_USERS
                                          • Modifies registry class
                                          • Suspicious behavior: EnumeratesProcesses
                                          • Suspicious use of AdjustPrivilegeToken
                                          • Suspicious use of WriteProcessMemory
                                          PID:3040
                                          • C:\Windows\system32\svchost.exe
                                            C:\Windows\system32\svchost.exe -k SystemNetworkService
                                            2⤵
                                            • Checks processor information in registry
                                            • Modifies data under HKEY_USERS
                                            • Modifies registry class
                                            PID:3540
                                          • C:\Windows\system32\svchost.exe
                                            C:\Windows\system32\svchost.exe -k SystemNetworkService
                                            2⤵
                                            • Checks processor information in registry
                                            • Modifies registry class
                                            PID:1932
                                        • c:\windows\system32\svchost.exe
                                          c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
                                          1⤵
                                            PID:1880
                                          • c:\windows\system32\svchost.exe
                                            c:\windows\system32\svchost.exe -k netsvcs -s SENS
                                            1⤵
                                              PID:1424
                                            • c:\windows\system32\svchost.exe
                                              c:\windows\system32\svchost.exe -k netsvcs -s UserManager
                                              1⤵
                                                PID:1292
                                              • c:\windows\system32\svchost.exe
                                                c:\windows\system32\svchost.exe -k netsvcs -s Themes
                                                1⤵
                                                  PID:1228
                                                • c:\windows\system32\svchost.exe
                                                  c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
                                                  1⤵
                                                    PID:1108
                                                  • c:\windows\system32\svchost.exe
                                                    c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                                                    1⤵
                                                      PID:1068
                                                    • c:\windows\system32\svchost.exe
                                                      c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
                                                      1⤵
                                                        PID:1012
                                                      • C:\Windows\system32\msiexec.exe
                                                        C:\Windows\system32\msiexec.exe /V
                                                        1⤵
                                                          PID:6128
                                                          • C:\Windows\syswow64\MsiExec.exe
                                                            C:\Windows\syswow64\MsiExec.exe -Embedding 1AD55BC78708C5638E5738F06BC987E7 C
                                                            2⤵
                                                              PID:4512

                                                          Network

                                                          MITRE ATT&CK Enterprise v6

                                                          Replay Monitor

                                                          Loading Replay Monitor...

                                                          Downloads

                                                          • memory/220-193-0x0000000000400000-0x000000000042B000-memory.dmp

                                                            Filesize

                                                            172KB

                                                          • memory/596-199-0x00000000001E0000-0x00000000001E1000-memory.dmp

                                                            Filesize

                                                            4KB

                                                          • memory/1012-168-0x0000027138B90000-0x0000027138C00000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/1068-162-0x00000197E5400000-0x00000197E5470000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/1108-158-0x0000029CE2E70000-0x0000029CE2EE0000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/1228-184-0x0000026CE1290000-0x0000026CE1300000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/1292-186-0x00000214047E0000-0x0000021404850000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/1424-169-0x00000233CEDD0000-0x00000233CEE40000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/1880-174-0x00000299FFD00000-0x00000299FFD70000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/1932-249-0x000001989D000000-0x000001989D105000-memory.dmp

                                                            Filesize

                                                            1.0MB

                                                          • memory/1932-205-0x000001989A770000-0x000001989A7BB000-memory.dmp

                                                            Filesize

                                                            300KB

                                                          • memory/1932-208-0x000001989A940000-0x000001989A9B0000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/2448-151-0x000001ACC4B40000-0x000001ACC4BB0000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/2476-145-0x000002CF88170000-0x000002CF881E0000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/2512-234-0x0000000002714000-0x0000000002715000-memory.dmp

                                                            Filesize

                                                            4KB

                                                          • memory/2512-230-0x0000000002710000-0x0000000002712000-memory.dmp

                                                            Filesize

                                                            8KB

                                                          • memory/2512-235-0x0000000002715000-0x0000000002717000-memory.dmp

                                                            Filesize

                                                            8KB

                                                          • memory/2512-233-0x0000000002712000-0x0000000002714000-memory.dmp

                                                            Filesize

                                                            8KB

                                                          • memory/2676-188-0x000001EE98270000-0x000001EE982E0000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/2688-190-0x000001DEE71D0000-0x000001DEE7240000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/2744-211-0x0000000000400000-0x0000000000416000-memory.dmp

                                                            Filesize

                                                            88KB

                                                          • memory/2808-324-0x0000017902A20000-0x0000017902A90000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/2808-156-0x0000017902600000-0x0000017902670000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/3040-144-0x000001DB0F350000-0x000001DB0F39B000-memory.dmp

                                                            Filesize

                                                            300KB

                                                          • memory/3040-316-0x000001DB0F3A0000-0x000001DB0F3EB000-memory.dmp

                                                            Filesize

                                                            300KB

                                                          • memory/3040-317-0x000001DB0F600000-0x000001DB0F670000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/3040-146-0x000001DB0F410000-0x000001DB0F480000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/3540-164-0x0000027FD3BD0000-0x0000027FD3C40000-memory.dmp

                                                            Filesize

                                                            448KB

                                                          • memory/3572-142-0x0000000004E20000-0x0000000004E7C000-memory.dmp

                                                            Filesize

                                                            368KB

                                                          • memory/3572-140-0x0000000004CB9000-0x0000000004DBA000-memory.dmp

                                                            Filesize

                                                            1.0MB

                                                          • memory/3660-152-0x000000001BB20000-0x000000001BB22000-memory.dmp

                                                            Filesize

                                                            8KB

                                                          • memory/3660-132-0x0000000001660000-0x0000000001661000-memory.dmp

                                                            Filesize

                                                            4KB

                                                          • memory/3660-126-0x0000000000F20000-0x0000000000F21000-memory.dmp

                                                            Filesize

                                                            4KB

                                                          • memory/3660-128-0x0000000001520000-0x0000000001521000-memory.dmp

                                                            Filesize

                                                            4KB

                                                          • memory/3660-129-0x0000000001530000-0x000000000154C000-memory.dmp

                                                            Filesize

                                                            112KB

                                                          • memory/3720-229-0x00000000024E0000-0x00000000024E2000-memory.dmp

                                                            Filesize

                                                            8KB

                                                          • memory/3776-217-0x00000000001E0000-0x00000000001E1000-memory.dmp

                                                            Filesize

                                                            4KB

                                                          • memory/3956-203-0x0000000002F50000-0x0000000002F52000-memory.dmp

                                                            Filesize

                                                            8KB

                                                          • memory/4112-231-0x0000000000AE0000-0x0000000000AE2000-memory.dmp

                                                            Filesize

                                                            8KB

                                                          • memory/4112-237-0x0000000000AE5000-0x0000000000AE6000-memory.dmp

                                                            Filesize

                                                            4KB

                                                          • memory/4112-232-0x0000000000AE2000-0x0000000000AE4000-memory.dmp

                                                            Filesize

                                                            8KB

                                                          • memory/5056-325-0x0000000004D10000-0x0000000004D6C000-memory.dmp

                                                            Filesize

                                                            368KB

                                                          • memory/5056-314-0x0000000004B98000-0x0000000004C99000-memory.dmp

                                                            Filesize

                                                            1.0MB

                                                          • memory/5204-264-0x0000000004F90000-0x0000000004F91000-memory.dmp

                                                            Filesize

                                                            4KB

                                                          • memory/5204-256-0x0000000004850000-0x0000000004E15000-memory.dmp

                                                            Filesize

                                                            5.8MB

                                                          • memory/5204-273-0x00000000053D1000-0x0000000005A30000-memory.dmp

                                                            Filesize

                                                            6.4MB

                                                          • memory/5204-275-0x0000000002DD0000-0x0000000002F1A000-memory.dmp

                                                            Filesize

                                                            1.3MB

                                                          • memory/5280-243-0x00000000021A0000-0x00000000021B2000-memory.dmp

                                                            Filesize

                                                            72KB

                                                          • memory/5280-242-0x00000000001F0000-0x0000000000200000-memory.dmp

                                                            Filesize

                                                            64KB

                                                          • memory/5356-250-0x0000000002D20000-0x0000000003427000-memory.dmp

                                                            Filesize

                                                            7.0MB

                                                          • memory/5356-252-0x0000000000400000-0x0000000000B14000-memory.dmp

                                                            Filesize

                                                            7.1MB

                                                          • memory/5356-257-0x0000000000D90000-0x0000000000D91000-memory.dmp

                                                            Filesize

                                                            4KB

                                                          • memory/5400-261-0x00000000009D0000-0x00000000009DD000-memory.dmp

                                                            Filesize

                                                            52KB

                                                          • memory/5520-276-0x0000000004CF0000-0x0000000004CF1000-memory.dmp

                                                            Filesize

                                                            4KB

                                                          • memory/5520-284-0x0000000005061000-0x00000000056C0000-memory.dmp

                                                            Filesize

                                                            6.4MB

                                                          • memory/5520-272-0x0000000004460000-0x0000000004A25000-memory.dmp

                                                            Filesize

                                                            5.8MB